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Oligonucleotide Release QC Testing Services

Release QC testing for DNA and RNA oligonucleotides with identity confirmation, impurity profiling, residual analysis and cGMP-ready documentation.

45+ Years of Expertise ISO 9001:2015 / ISO 13485:2016 Bench to Kilo Scale Confidential & IP-Protected U.S.A Facilities - Texas

Overview

Bio-Synthesis provides oligonucleotide release QC testing and analytical release testing for DNA and RNA oligos with audit-ready documentation. Panels can cover identity confirmation, purity, impurity profiling, residual analysis, safety testing and general attributes so lots can be reviewed for RUO, GLP, diagnostic or cGMP-oriented workflows.

Choose a standard non-cGMP QC panel for speed, a cGMP/ISO13485 release panel with QA oversight, or a custom package with client method transfer and ICH Q2(R2)-aligned validation.

Final panel design, acceptance criteria and documentation level should be aligned with sequence chemistry, intended use, formulation requirements and regulatory strategy.

Testing Scope

Analytical Coverage

A technical snapshot of the core release testing categories Bio-Synthesis can configure for oligonucleotide lots.

Identity
LC-MS, MALDI-TOF and optional enzymatic digest mapping.
Purity & Impurities
RP-HPLC, IP-RP-HPLC, CE and IEX for shortmers, n-1/n-2 species and charge variants.
Residuals & Safety
GC solvents, ICP-MS metals, endotoxin, bioburden and nuclease testing when needed.
Documentation
CoA, chromatograms, spectra, calculations and QA-reviewed release reporting.

Release QC at a Glance

Quick View

A compact view of service pathways, documentation options and turnaround expectations.

01
RUO, GLP, cGMP & ISO13485 Support Panel depth can be matched to research, diagnostic or regulated workflows.
02
Standard or Custom Specifications Use default release attributes or align criteria to client method requirements.
03
Fast Non-cGMP or QA-Reviewed cGMP Typical 3–7 day non-cGMP and 7–15 day cGMP turnaround, panel dependent.
04
CoA-Ready Deliverables Release documentation can include CoA, raw data summaries, chromatograms and spectra.

Release QC Program Panels

Three practical service pathways help match analytical depth, documentation level and turnaround with the intended use of each oligonucleotide batch or release lot.

Standard

Non-cGMP QC Panel

  • Identity: LC-MS or MALDI-TOF
  • Purity: RP-HPLC or IP-RP-HPLC
  • UV/OD260 quantitation
  • Salt/TEAA check by conductivity
  • Optional CE purity and IEX charge variants
cGMP / ISO13485
Regulated Workflow

cGMP/ISO13485 Release Panel

  • Identity: intact LC-MS ± enzymatic digest mapping
  • Validated RP/IP-RP-HPLC with impurity reporting
  • Residual solvents by GC and elemental impurities by ICP-MS
  • Karl Fischer water, pH and appearance
  • Endotoxin, bioburden and DNase/RNase as needed
Custom

Method Transfer & Validation

  • Client method transfer and verification
  • ICH Q2(R2): accuracy, precision, linearity, range and robustness
  • Custom impurity targets such as n-1/n-2, depurination and shortmers
  • Sequence-specific assays including LC-MS/MS and enzymatic digestion
  • Stability-indicating methods using heat, pH or enzymatic stress

Methods & Instrumentation

Methods vary by sequence length, chemistry and modification pattern including PS, PN, boranophosphate, methylphosphonate, 2′-OMe, 2′-F, LNA/BNA, cEt, dyes, lipids, GalNAc and PEG.

CategoryPrimary MethodsPurpose
IdentityLC-MS (ESI), MALDI-TOF, enzymatic digest mappingConfirm intact mass and verify sequence by fragment mapping when required.
PurityRP/IP-RP-HPLC, CE, IEX for charge variantsQuantify full-length product versus shortmers, n-1/n-2 species and process impurities.
ImpuritiesGC residual solvents, ICP-MS elemental impurities, UV/OD260, conductivityAssess ACN, TEAA, metals and carryover salts or buffers.
SafetyLAL endotoxin, USP bioburden, sterility if applicableDemonstrate microbial control for aseptic or regulated applications.
GeneralKarl Fischer, pH, appearance, osmolality as neededSupport release specifications and formulation requirements.

Release Criteria Examples

Typical specifications are shown as examples only. Final release criteria should be set per program needs, intended use and regulatory strategy.

AttributeTypical SpecificationMethod
IdentityIntact mass within ±5 ppmESI LC-MS
Purity≥85-98% main peakRP/IP-RP-HPLC
Residual SolventsMeets ICH Q3CGC
Elemental ImpuritiesMeets ICH Q3DICP-MS
Sodium ContentReport or meets target rangeIon chromatography or flame photometry
Endotoxin≤0.5 EU/mg, use-case dependentLAL
BioburdenUSP <61>/<62> acceptanceCulture / USP
Water ContentReport or target rangeKarl Fischer
DNase/RNaseNot detected, if applicableActivity assays

How Release QC Works

A structured release workflow keeps the project moving from specification review to documented results, while allowing panel depth to scale for RUO, cGMP, ISO13485 or method-transfer programs.

Define

Scope & Quote

Share target specifications, oligo modality and intended use. We recommend a tailored QC panel, documentation level and quote.

Receive

Sample Intake

Chain-of-custody, storage requirements, lot metadata and sample condition are reviewed before testing begins.

Analyze

Testing & Review

Analysts execute approved methods with technical review and QA oversight when required for cGMP or regulated panels.

Release

Report & CoA

Methods, chromatograms, spectra, calculations and pass/fail results are compiled against release specifications.

Sample Requirements & Shipping

Amount

Typically ≥200 µg, method-dependent. Provide extra aliquot for ICP-MS or GC if possible.

Format

Dry or in buffer. Include length, chemistry, purification, concentration and storage conditions.

Shipping

Ambient for DNA; cold chain suggested for RNA or ASOs. Use insulated packaging and SDS if applicable.

Program fit: Release QC can scale from quick feasibility testing to full cGMP release, stability-indicating methods and long-term analytical support.

Related Services

Stability

Oligo Stability Studies

ICH Q1A(R2) stability studies with analytical reporting.

Request a Study Plan →

Methods

Analytical Method Development & Validation

Method scouting, transfer and ICH Q2(R2)-aligned validation.

Discuss Your Method →

Manufacturing

Custom Oligonucleotide Synthesis

RUO to cGMP-aligned oligos with purification and conjugation support.

Explore Synthesis →

FAQ

What is included in oligonucleotide release QC?
Identity testing, purity and impurity profiling, safety testing, general attributes and CoA documentation against predefined specifications.
How are specifications defined?
Specifications start from the modality and use case, then are finalized around risk, formulation needs and regulatory strategy.
Do you offer GMP testing?
Yes. cGMP panels can include QA oversight, controlled documentation, instrument traceability and an audit-ready data package.
What sample amount do I need?
Most panels can be planned with ≥200 µg, but complex impurity, elemental or microbial panels may require more material.
How fast is turnaround?
Non‑GMP panels typically 3–7 business days; GMP panels 7–15 days depending on scope and queue.
Can you transfer my in‑house method?
Yes. We routinely execute method transfer and verification and can perform full ICH Q2(R2) validation where needed.

Need Oligonucleotide Release Testing Support?

Discuss identity testing, impurity profiling, residual testing, cGMP documentation, method transfer or release specifications with our analytical team. Share your oligo type, sequence chemistry, intended use and required testing scope for review.

Related Product

Connect release QC with synthesis, purification, stability studies and analytical method support.

Fast Quote Checklist

Include oligo type, sequence or length, chemistry/modifications, intended use, required tests, target specifications, grade and timeline.

Send Quote Details →

Why Choose Bio-Synthesis

Trusted by biotech leaders worldwide for over 45+ years of delivering high quality, fast and scalable synthetic biology solutions.